Kotaky operative fastener device



Feb. 25, 1947. H. J. MURPHY Re. 22,847,

ROTARY OPERATIVE FASTENER DEVICE AND INSTALLATION OF THE SAME Original Filed June 25, 1941 5 Sheecs-Sheet l 20 I K 1 x 9 W g/ .J I I M HbwardJ Mur viz y.

I W flay.

Feb. 25, 1947. H. J. MURPHY ERATIVE FASTENER DEVICE AND INSTALLATION OF THE SAME 3 Sheets-Sheet 2 ROTARY 0? Original Filed June 25, 1941 fzveni or; Howard JMZLPPYZ/y.

Feb. 25, 1947. H. J. MURPHY Re; 22,847

D INSTALLATION OF THE SAME ROTARY OPERATIVE FASTENER DEVICE AN Original Filed June 25, 1941 5 Shee'c.sSheet f5 [7229a 7230?. HowardJ -L @2 72y.

21 Hwy Reissued Feb. 25, 1947 ROTARY OPERATIVE FASTENER DEVICE AND INSTALLATION OF THE SAME Howard J. Murphy,

United-Carr Fastener Mass, a corporation Original No.

Greenwood, Mass, assignor to Corporation, Cambridge, 1 Massachusetts 2,309,737, dated February 2, 1943, Se-

rial No. 399,759, June 25, 1941. Application for reissue August 28,

19 Claims.

This invention aims to provide improvements in fastener devices for securing together two or more members, preferably p1ate-1ike,the devices being of the so-called rotary operative type and adapted to draw the plates together on rotation of one part of the device relative to the other.

The chief object of my invention is the provision of a fastener device of simple construction having a socket member of generally rigid form and cooperating with a stud member in a manner to draw the parts to be secured firmly together. The socket member is designed particularly to effect a. rigidsupport for a lateral projection of the stud member and integral spring means to hold the projection in looking engagement with the socket member. As a result of my improved construction wherein the pin of the stud member is supported by a rigid portion, it is impossible for the plates when secured together to move apart flatwise when subjected .to forces tending to cause such action. In this regard it may be mentioned that fastener devices, known in the art, which include a flexible or yieldable socket member are not wholly satisfactory for use on high speed airplanes as the socket members by their inherent nature are so flexible that under certain conditions they permit one of the secured members to move away from the other.

Other uses and objects of my invention will be apparent from the drawing and specification below set forth.

In the drawing, which illustrates preferred embodiments of my invention: Fig. 1 is a top plan view of my first form of socket member secured in assembly with a supporting plate;

Fig. 2 is a view showing the stud member preferably used in cooperation with the several forms of socket member herein described;

Fig. 3 is a view similar to Fig. 1 and showing the stud member arrested part way between unfastened and fastened position;

Fig. 4 is a view similar to Fig. 3 but showing the stud member in fastenedposition;

5 is a section taken on the line -5--5 of Fig.4;

Fig. 6 is a section. taken along the line 6-6 of Fig. 4'

Fig. 7 a top view of a second form of socket member secured toa supporting plate;

Fig. 8 is a view similar to Fig. 7 and showing a stud member arrested part way between unfastoned and fastened position;

Fig. 9 is a view similar to 8 showing stud member in fastened position; 1

the

1943, Serial No. 500,460

Fig. 10 is a top plan view of my third form of socket member secured to a supporting plate;

Fig. 11 is a view similar to Fig. 10 and showing a stud member in fastened engagement with the socket member;

Fig. 12 is a side elevation of the installation shown in Fig. 11;

Fig. 13 is a section of Fig. 11;

Fig. l4-is a section taken alongthe line I l- 14 of Fig. 10 and showing the normal relation between the socket member and its supporting plate;

Fig. 15 is a view similar to Fig. 13, but showing the action of my improved device when used with taken along the line l3-l3 supporting plates having a combined thickness tion, has an aperture 5 surrounded by a frustraconical embossment B and the plate 4 has an opening 1 (Fig. ,6) through which the rotary member projects. The opening 1 is preferably surrounded by a frustro-conical embossment B so that the plate 4 may present a flush outer surface when the rotary unit is finally assembled with the same. It will be seen that the embossment 8 of plate 4 is constructed to be disposed in and complementary to the embossment 6 of plate 2, to enable the plates 2- and 4 to be secured with their facing surfaces in abutting engagement.

My first form of socket member I is formed from one piece of metal and provides an elongated plate-like element 9. The element 9 has feet or end portions Ill-l0 at opposed longitudinal ends disposed in the same plane so that the lower flat surfaces H (Fig. 5) thereof lie flush with the inner surface I2 of the supporting plate 2 when the socket member is secured in assembly with the plate. The socket member is preferably secured to the plate by means of rivets l3 which project through the end portions I0 and are headed over on the outer sides of the socket memher and plate. The fastener member has a raised portion l4 intermediate the ends Ill-40 which has a central opening l5 and slots IS in the form of narrow elongations of the central opening and is secured on one side of aperture 1 in alignment opening I of the socket member is in alignment portions 2 I from their attaching have passed those extending on opposite sides of the same. raised element I'I-I1 on opposite sides of the opening I5 extending from a low point adjacent the end of one of the slots I6 to a high point near the end of the other slot. Stop portions in the form of ears I8 extend upwardly from the raised element |4 adjacent the high points of the inclined surfaces. Locking means for engagement with the stud unit to assist in drawing the parts to be secured together are formed as an integral part of the fastener. The locking means comprises a pair of yieldable arms |9|9 which are integrally joined to the plate element and disposed in superposed relation to the plate element with the planes of their fiat sides plane of the plate element. Each of the arms I9 has an attaching portion 20 (Fig. 5) at one end and the attaching portions are integrally joined to the plate element at diagonally opposite points on the longitudinal sides of the same. Spring portions 2| extend from the attaching portions each of which projects from the respective longitudinal side edge toward the central aperture I5 of the plate element and past the same. Each of the spring portions has a free end portion 22 extending at a slight angle to the normal direction of the spring portion.

The rotary unit 3 comprises a head portion 24, which is larger in diameter'than the opening I of the panel 4, and a shank having a base por- "tlon25 (Fig. 6) which is slightly smaller in diameter than the aperture 1. The shank has a nose "26 (Figs. 5 and 6) which is adapted to extend through the opening I5 of the plate element The rotary unit is preferably secured in assembly with the plate 4 by a split ring 21 (Fig. 6) which is snapped into a groove 28 of the base 25. A pin 29 is driven or otherwise secured in an aperture of the nose 26 the pin extend laterally beyondthe shank on opposite sides thereof in a direction transverse :to the normal axis of the shank. 'I'hehead 24 preferably has a slot 3|) (Fig. 5) to receive a tool or suitable implement by which the unit may be The rotated.

In fasteningthe plate 4 to the plate 2 the plates are brought into a superposed relation with the with the aperture 5. The

with the apertures 5 and I and the nose 26 of the 'shank passes through the opening I5 with the pin 29 in registration with the slots I 6 of the plate element. Thereafter the rotary member is turned in a counter-clockwise direction viewing Figs. 3 and 4, causing the pin to ride up the inclined surfaces I1, at the same time drawing the plate 4 tightly against the plate 2. At the beginning of this action the pin ends 3| engage the spring forcing the same away from each other against their normal spring tension, as most clearly shown in Fig. 3. The portions 2| pivot points of junction with the respective portions 20 and as soon as the pin ends points at which the spring portions have maximum expansion the spring portions tend to resume their normal position and engage the pin ends to force the same against the inclined surfaces, 2.The spring portions 2| exert a constant tension on the pin ends fastener so as to prevent the same from moving in a reverse direction and thereby allow the parts as most clearly shown in Fig. 4.

in preferred operation of the of the assembly to loosen. As a result of my improved construction the pin ends are supported I4 has inclined or locking surfacesso that opposite ends of preferably normal to the general durable fastener.

entirely by the plate element 9, which is rigid against any forces tending to move the plates fiatwise away from each other. The stops I8 operate to prevent the rotary unit from being turned too far during "the fastening operation.

My second socket member illustrated in Figs. 7, 8 and 9 is similar to my first. form, but embodies certain changes intended to increase the flexibility of the spring arms. My second form of socket member is a one-piece device and includes a plate element 32 having end portions 33 secured in engagement with the panel 2 by rivets 34. The plate element has a raised element 35 intermediate the end portions having a central opening 36 (Fig. 7) and slots 31 extending laterally on opposed sides of the central opening and diagonally in relation to the plate element. The raised element 32 has inclined surfaces 38 which are'similar in form to the inclined surfaces II of my first form and carry out an equivalent function. Ears 39 (Fig. 7) project upwardly from the raised element 35 near the high points of the inclined surfaces and act as stops. My second form of socket member differs chiefly from my first form in the construction of the locking arms 4II4|I. Each of the locking arms 40 has an attaching portion 4| at one end and the portions 4| are integrally joined to opposed longitudinal marginal edges of the plate element 32 adjacent the end portions 33. Each arm 40 is disposed in superposed relation to the plate element with the planes of its flat sides in perpendicular relation to the general plane of the plate element. Each arm has a yieldable portion 42 extending a predetermined distance in a plane substantially normal to the longitudinal sides of the element. A reverse-bend portion 43 forms a continuation of the portion 42 and provides a loop 44 at the junction. The reverse-bend portion 43 extends generally parallel to a diagonal of ,the plate element and normally substantially tangent to the opening 36 and past the same, as shown in Fig. 7. A radius 45 is provided at the free end of the reverse-bend portion which is intended to follow the pin ends when, as a result of the relative thickness of the parts to be attached, it is necessary that the pin ends be turned to full closed position against the ears 39 in order to draw the parts tightly together. 7

In operation of the fastener device embodying my second form of socket member rotation of the stud unit causes the pin ends to engage the reverse-bend portions 43. As a result of this action the portions 42 yield at their junction with the respective attaching portions 4| so as to form substantially obtuse angles with the portion 4|, as shown in Fig. 8, and at the same time the reverse-bend portions yield at the loop 44 and expand outwardly substantially in the direction of the respective portions 42 so as to decrease the angle between the same. When the pin ends have passed those points at which the reversebend portions 43 are in maximum expansion the reverse-bend portions 43 tend to return toward normal shape and force the pin ends into locked position against the inclined surfaces 38. Thus, it will be seen that in my second form the arms 40 yield at two places along their respective lengths whereby they have increased flexibility which may result in a better action and a more Although in the two forms of devices hereinabove described-I have shown the pins 29 of the stud unit abutting the respective stops I8 and 39 when the parts of. the device are in full fastened position, it is understood that the other slot 59. Ears 5 :the parts .cnoperate to effect .a @good looking :action if, mine to a greater jcombined thickness of the plates 2 and :4, the pin ends fetch up tightly :against the inclined surfaces short of the stops.

:Referring to the third form of my invention illustrated in Figs. -16, the socket member is formed of one :piece or :metal and is generally similar in construction and operation to the two dorms which have :been :described. The chief difference between .my third form and the two previous forms :is in the construction of the plate element which instead of being rigid, as in my first two for-ms, is slightly flexible so as to operate in combination with the :stud unit to secure plates firmly together which vary substantially in thickness.

Referring in detail to my third form of socket member, I :haveshownone-providing :a plate element 4,6 which is normally slightly bowed in longitudinal cross-sectional configuration, as shown :in Fig. 15. The plate element has end portions 4 1 at opposed longitudinal ends and .a .raisedielement 48 intermediate the end portions. The raised-element 43 has a central opening it and slots 50 providing continuations of the cen- .tral opening and extending toward the longitudinal ends of the plate element. The plate element has locking surfaces on opposed sides of the central opening, each of which comprises an inclined surface 5| extending from a low point adjacent one of the slots 5!] and a generally flat surface 52 .forminga continuation of the inclined surface and disposed at a high adjacent 52 project upwardly from .the flat surfaces :52 adjacent the slots 5%, providing stops to limit rotation of the stud unit. .My third form of fastener has locking arms .53 formed of. one piece with the plate element. Thearms 153 havelattaching portions 54 integrally joined to the plate element at diagonally opposed points on the longitudinal sides of the plate elementand spring portions 55 extending from the attaching portions 56 in superposed relation to the ,plateelement and normally substantially tan- ..gent to the central opening 4-!) (Fig. l0) so as to .be engaged by the pin ends 3! of the stud unit when the same is rotated.

.Thesocketmember is secured to the supporting plate 2 by rivets having shanks 56 extending through the slots Ell and plate .2, each of the "rivets havinga head 51at one end of the shank in superposedrelation to the plate element 45 and a head .58 at an opposite end of the shank received within a countersunk hole 59 of the supporting .plate,-:as shown in Fig. 15. When my third .iorm :of socket member is secured in. assembly with the :plateL-as shown in Fig. 15, the outermost edges 60 of the end portions 4'? abut the inner surface SI of the plate 2 and, as a result of the bowed shape .of the plate element, portions of the end portions 41 adjacent the center of the plate element are spacedfrom the surface it! of the plate. ills a .result of this construction the plate element may yield or flatten down to compensate for variations in the thicknesses of the supporting plates to besecured together.

Thus in operation of my third form of socket member when the stud unit is rotated the pin ends 3] :ride up the inclined surfaces :51 at the :same time expanding the spring portions 55. When the combined width of the supporting plates 12 and 4 .is relatively great, engagement of the .pin ends win the inclined surfaces causes the plate element to flatten down so as to .move

the end portions 4! .into fiat, abutting relation with the surface Bl .of the supporting plate :2. Rotation of the stud unit is continued until the pin ends "ride up upon the flat surfaces '52 of the plate :element, at which time they have passed those points providing maximum expansion of the spring portions 53. and are held on the flat-surfacesit'vz by the free ends of the portions 5'5, as shown most clearly in Figs, ll, 12, '13 and I6. When the socket member is used with plates of predetermined tlfdclmess the end portions-d1 may enter fiat abutting relation with the plate 2 simultaneously with enga ement of the pin ends with the flat surfaces 52 of the plate element. Thus the plate element, in spite of its yieldable characteristics, provides a very rigid support for the pin ends when the parts of the installation are finally fastened together. In Fig. 15 I have illustrated the operation of the fastener when the combined thickness of the supporting plates is less than the preferred thickness illustrated in Fig. 13. Thus with the installation shown in .Fig. 15 wherein the outer plate 4 is of less thickness the end portions will not pull down into fiat abutting relation with the plate 2 when the parts of the fastener are in fastened relation, but, instead, may be spaced slightly from the plate 2 although pulled down to some extent from the normal spaced position shown in Fig. I l. With the installation shown in Fig, 15 it is apparent that the plate element not as rigid as when plates having a reater combined thickness are secured together, but, nevertheless, it provides a firm enough support for the pin ends to be satisfactory in most installations.

Although I have illustrated anddescribed preferred embodiments of my invention, I do not wish to be limited thereby because the scope of my invention is best defined by the following claims.

I claim:

1. 'In a fastener device of the rotary operative type, aplate-flike element adapted to be secured to one of the parts :to 'be fastened, said platelike element having an aperture and .a cam sur- :face adjacent :said aperture, a rotary member having a shank adapted to pass through the aperture in said plate-like element and having a lateral projection adapted to ride up said cam surface on relative rotation of the parts, and spring means movable laterally relative to the general plane of :said plate-like element and cooperating with said projection, said spring means being expanded laterally by said projection during rotation of said rotary member and thereafter tending to contract to hold said projection in fastener engagement with said plate-like element.

2. 'In a fastener device of the :rotary operative type, a plate-like element adapted to be secured to zone of the parts 'to be fastened, said platelike element having an aperture and a locking surface adjacent said -.aperture a rotary member having a shank adapted to pass through the aperture in :said plate-like element and having a lateral projection adapted to engage said locking surface on relative rotation of the parts, and a spring arm portion integrally joined to said plate element, said arm being arranged for movement in substantially parallel relation to the general plane of said ;plate-like element and adapted to engage with said lateral projection to maintain said projection in fastener engagement with said plate-like .-element.

.3. Ina-sheet metal iastenerdeviceof the rotary like element and adapted to positioned on said a shank adapted to 7 operative type, a plate-like element adapted to be secured to one of the parts to be fastened,

said plate-like element havin an aperture and a rigid cam surface adjacent said aperture, a rotary member having a shank adapted to pass through the aperture in said plate-like element and having a lateral projection adapted to engage said cam surface on relative rotation of the parts, and a spring arm portion integrally joined to said plate element, said arm having the plane of one of its flat sides in substantially normal relation to the general plane of said plate-like element, said arm being movable in substantially parallel relation to the general plane of said plateengage said projection under tension to maintain said projection in fastener engagement with said plate-like element.

4. In a fastener device of the rotary operative type, a plate-like element having means permitting it to be secured at its ends to one of the parts to be fastened, said plate-like element having an aperture, an inclined surface adjacent said aperture terminating in a substantially flat surface, a rotary member having a shank adapted to pass through the aperture in said plate-like element and having a lateral projection adapted to ride up said inclined surface and be finally flat surface on relative rotation of the parts, and a spring portion movable laterally relative to said plate-like element and adapted to cooperate with said lateral projection to maintain said projection in fastener engagement with said plate-like element.

5. In a fastener device of the rotary operative type, a plate-like element adapted to be secured to one of the parts to be fastened, said plate-like element having an aperture and an inclined surface adjacent said aperture, a rotary member having a shank adapted to pass through the aperture in said plate-like element and having a lateral projection adapted to engage said inclined surface on relative rotation of the parts, and a generally S-shaped spring arm portion integrally joined to a marginal edge of said plate element,

said arm being movable in substantially parallel relation to the general plane of said plate-like element and adapted to cooperate with said lateral projection to maintain said projection in fastener engagement with said plate-like element.

6. In a fastener device of the rotary operative type, a plate-like element adapted to be secured to one of the parts to be'fastened, said plate-like element having an aperture and opposed inclined surfaces adjacent said aperture, a rotary member having a shank adapted to pass through the aperture in said plate-like element, pin-like lateral projections on opposed sides of said shank adapted to engage said inclined surfaces upon relative rotation of the parts, and opposed yieldable portions integral with said plate-like element and movable outwardly on engagement of said projections therewith thereby to hold said parts in engaged relation.

7. In a fastener device of the rotary operative type, a plate-like element adapted to be secured tonne of the parts to be fastened and formed with a locking surface spaced from said part, said locking surface having an aperture and a cam surface adjacent thereto, a rotary member having pass through the aperture of said locking surface and having a'lateral projection adapted to ride upon said cam surface on the parts, and spring means said parts for engaging said relative rotation of connected to one of her in a given surfaces together,

stud and resisting rotation thereof when said stud has been rotated to a predetermined position.

8. A fastening device for detachably securing Work surfaces together comprising a plate-like member for association with the surface of one work part and formed with a stud-engaging sur face spaced from the said Work part and adapted to accommodate a fastening stud, said stud-engaging surface being apertured for the reception of said stud and provided with cam surfaces adjacent thereto for locking engagementwith a part of said stud, and an integral spring member for engaging said stud and resisting rotation thereof when the stud is rotated relatively to the studengaging member in a given direction to clamp the work surfaces together.

9. A fastening device for detachably securing work surfaces together comprising a plate-like member for association with the surface of one work part and formed with a stud-engaging surfrom the said work part and adapted to accommodate a fastening stud, said stud-engaging surface being apertured for the reception of said stud and provided With cam surfaces adjacent thereto for locking engagement with a part of said stud, and a leaf spring member integral with said plate-like member for engaging said stud and resisting rotation thereof when the stud is rotated relatively to the stud-engaging member in a given direction to clamp the work surfaces together.

10. A fastening device for detachably securing work surfaces together comprising a plate-like member for association with the surface of one work part and formed with a stud-engaging surface spaced from the said work part and adapted to accommodate a fastening stud, said stud-engaging surface being apertured for the reception of said stud and provided with cam surfaces adjacent thereto for locking engagement with a. part of said stud, and a leaf spring member positioned above said stud-engaging surface integral with said plate-like member for engaging said stud and resisting rotation thereof when the stud is rotated relatively to the stud-engaging memdirection to clamp the work surfaces together.

11. A fastening device for detachably securing work surfaces together comprising a plate-like member for association with the surface of one work part and formed with a stud-engaging surface spaced from the said work part and adapted to accommodate a fastening stud, said stud-engaging surface being apertured for the reception of said stud and provided with cam surfaces adjacent thereto for locking engagement with a part of said stud, and a leaf spring member positioned above said stud-engaging surface and adapted to be tensioned by said stud when the latter is rotated in a given direction to clamp said work said spring member engaging said stud and resisting rotation thereof.

12. A sheet metal fastening device having a base portion adapted to be secured to a support, a locking plate. normally spaced from the plane of said base portion and apertured to accommodate a rotary stud equipped with a lateral cam.

prising in combination separable cooperating f astening elements, interengaging means on said fastener elements arranged to effect a progressive drawing together of the fastener elements, upon relative movement thereof in one direction, and means associated with said interengaging means for restraining relative movement thereof in the opposite direction throughout the range of fastening engagement of the fastener elements.

14. A cowl fastener of the kind described comprising in combination separable cooperating fastening elements, interengaging means on said fastener elements arranged to effect a progressive drawing together of the fastener elements upon relative movement thereof in one direction, and resilient means associated with said interengaging means effective for restraining relative movement thereof in the opposite direction in various positions of engagement of the interengaging means.

15. A cowl fastener of the kind described comprising in combination separable, cooperating, relatively movable cooperating fastening elements, interengaging means on said fastener elements arranged to effect a progressive drawing together of the fastener elements upon relative movement thereof in one direction, and resilient means associated with said interengaging means and acting upon one of the elements to restrain relative movement thereof in the opposite direction.

16. A cowl fastener of the kind described comprising in combination separable, cooperating relatively movable fastener elements, interengaging means on said fastener elements including an inclined surface on one of said elements and an engaging member on the other of said elements arranged to effect a progressive drawing together of the fastener elements upon relative movement thereof in one direction, and means associated with said interengaging means for restraining relative movement thereof in the opposite direction throughout the range of fastening engagement.

1'7. A cowl fastener of the kind described comprising in combination separable, cooperating, relatively movable fastening elements, interengaging means on said fastener elements including an inclined surface on one of said elements and a pin on the other of said elements arranged to engage the inclined surface and to effect a progressive drawing together of the fastener elements upon relative movement thereof in one direction, and a resilient element associated with said inclined surface acting upon said pin throughout the range of fastening engagement with said inclined surface, the resilient element being arranged to restrain movement of the pin in the other direction.

18. A cowl fastener of the kind described comprising in combination separable, cooperating, relatively movable fastening elements, interengaging means on said fastener elements including an inclined surface on one of said elements and a pin on the other of said elements arranged to engage the inclined surface and to effect a progressive drawing together of the fastener elements upon relative movement thereof in one direction, and a resilient element associated with said inclined surface acting upon said pin throughout the range of fastening engagement with said inclined surface, the resilient element being arranged to act upon the pin with a varying force inversely as the pin moves to effect a drawing together of the fastener elements.

19. A cowl fastener of the kind described comprising in combination separable, cooperating relatively rotatable fastening elements, interengaging means on said fastener elements including inclined surfaces forming partial convolutions of a helix in oppositely directed planes on one of said elements and a pin on the other of said elements arranged to engage said inclined surfaces and to effect a progressive drawing together of the fastening elements upon relative rotation thereof inone direction, and a resilient cooperating member acting upon said pin throughout the range of fastening engagement with said inclined surface.

HOWARD J. MURPHY. 

